Tubular lamp.



No. 888,189. PATENTED MAY 19, 1808.'

c. L. 8811s.

TUBULAR LAMP.

APPLICATION FILED MAB.23.1907.

m1 WW- II UNITED STATES PATENT OFFICE.

CHARLES L. BETTS, OF NEW YORK, N. Y., ASSIGNOR TO it. E. DIETZ COMPANY, OF NEW YORK, N. Y.

TUBULAR LAMP.

To all whom it may concer/a.'

Be it known that I, CHARLES L. Bn'r'rs, a citizen of the United States, residing at New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Tubular Lamps, of which the following is a specification.

This invention relates to that class of tubular lamps in which the oil pot is provided above its top with an air chamber on which the burner is seated and with an upwardly projecting rim or flange on which the globe is supported. Oil pots of this construction are employed, for instance, in tubular globe street lamps, where they are usually so arranged that the air for the support of the 'flame passes from the tubes into an air chamber below the bottom of the oil pot, from this lower air chamber into the air chamber which is arranged above the top of the oil pot, and from this upper air chamber to the burner.

The object of this invention is to improve the construction of the oil pot and the upper air chamber with a view of simplifying the parts, rendering the structure stronger and more durable, and reducing the cost of the structure.

In the accompanying drawings: Figure 1 is a sectional elevation of my improved oil pot and upper air chamber. Fig. 2 is a top plan view thereof, part of the figure showing the upper air chamber and burner removed from the oil pot. Fig. 3 is a fragmentary sectional elevation of the upper air chamber. Fig. 4 is a fragmentary sectional elevation of the oil pot.

Like letters and numerals of reference refer to like parts in the several figures.

A represents the oil pot comprising an outer cylindrical wall 10, a bottom plate 1 1, a" top plate 12, and upright air tubes 13 extending from the bottom to the top plate.

B represents the lower air chamber which receives the air for the support of the flame through the central opening 141 in its bottom plate 15 in the usual manner.

C represents the upper air chamber which is arranged upon the oil pot, D represents the burner which is mounted upon this air chamber, and E represents the globe.

The top plate 12 of the oil pot is formed integrally with the peripheral wall 10 thereof by drawing or stamping these parts out of one blank of sheet metal. The bottom plate Specification of Letters Patent.

Application filed March 23, 1907.

Patented May 19, 1908.

Serial No. 364,052.

11 of the oil pot is secured to the peripheral wall thereof by a seam 16, or in any other suitable manner. The lower air chamber B is secured to the peripheral wall of the oil pot by bending it over the seam 16, or by soldering or other suitable means.

The top plate 12 of the oil potis provided at a suitable distance from its peripheral edge with a raised bead 17, which forms a seat for the upper air chamber, and at the lmiddle with a raised portion 1S having a central opening provided with a downturned flange 19 in which the lower portion of the burner is seated.

The upper air chamber O comprises an annular plate 2() and an upturned marginal rim or flange 21 which is formed integrally with said plate and on which the globe rests. Both parts are drawn or stamped out of one blank of sheet metal. rlhe plate 20 is provided at its middle with an opening having an upturned flange 22 on which the skirt 23 of the burner cone is seated. This annular plate 20 is of such diameter and shape that it will seat itself against the annular bead 17 on the top plate of the oil pot, whereby the upper air chamber is centered on the oil pot and held against lateral displacement. The air chamber is secured to the top of the oil pot by solder applied in a few places around the chamber.

By forming the upturned globe supporting rim 21 in one piece with the air chamber the rim is greatly strengthened and iirmly supported upon the oil pot and the air chamber is also correspondingly still'ened. By forming the top plate of the oil pot in one piece with the peripheral wall thereof these parts are `firmly secured together, all possibility of leakage at the top is avoided, and a iirm support for the air chamber is provided. By my improved construction the cost of the structure is considerably reduced.

.l claim as my invention:

1 The combination of an oil pot having its top formed integrally with its peripheral wall and an air chamber comprising an annular plate which forms the top of the air chamber, and a cylindrical globe supporting flange extending upwardly from the outer portion of said plate and formed integrally therewith, said air chamber resting with its outer portion upon the top of the oil pot, substantially as set forth.

2. The combination of an oil pot, an air Chamber comprising an annular plate and a cylindrical flange extending upwardly from the outer portion thereof, said air chamber resting with its outer langed portion upon the top of the oil pot, and a globe resting upon said flange7 substantially as set forth.

3. The combination of an oil pot having its top provided with a raised annular bead at a distance inwardly from the peripheral wall ofthe oil pot, and an air chamber comprising an annular plate and a cylindrical flange eX- againstsaid bead, substantially as set forth. 15

fitness my hand in the presence of two subscribing witnesses.

CHARLES L. BETTS.

Witnesses HOWARD L. FLETCHER, JAMES SORIANO. 

